WO2012175268A1 - Insulating material - Google Patents
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- WO2012175268A1 WO2012175268A1 PCT/EP2012/059548 EP2012059548W WO2012175268A1 WO 2012175268 A1 WO2012175268 A1 WO 2012175268A1 EP 2012059548 W EP2012059548 W EP 2012059548W WO 2012175268 A1 WO2012175268 A1 WO 2012175268A1
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- insulation material
- rubber mixture
- rubber
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- insulation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/88—Insulating elements for both heat and sound
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
- C08K7/28—Glass
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/46—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes silicones
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/14—Peroxides
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
Definitions
- the invention relates to a flexible insulation material based on a
- Insulation materials made of mineral wool with laminations have the following disadvantages: The assembly or application to the component to be insulated and the fixation is cumbersome and therefore expensive. Complex components (fittings) are very difficult to isolate due to the low flexibility of the mineral wool with the necessary lamination (sheathing). Mineral wools are absorbent, resulting in leakage of or accidental wetting with liquids or formation of condensate below
- Fabric layers can be provided.
- the silicone rubber suit is before the
- the rubber layer is usually applied as a paste or solution, dried and then crosslinked. Due to the previous networking, the material usually has no plastic
- Web-shaped, flexible insulation material often offers the disadvantage, even in the case of plastic deformability, that undercuts on complex components, such as valves or valves, are not filled with the insulating material when the web material is wound up.
- the invention is therefore based on the object, an insulation material for the
- the rubber mixture is at least partially uncrosslinked and plastically deformable and a Mooney viscosity ML (l + 4) determined at 23 ° C according to DIN 53523 Part 3 of 5 to 20 ME.
- partially uncrosslinked is meant both a rubber mixture containing not yet spent crosslinking chemicals, as well as a
- Rubber mixture which is crosslinked with little or no crosslinking chemicals, but still has at least crosslinkable polymer components. Due to the plastic deformability with low Mooney viscosity ML (l + 4) at 23 ° C from 5 to 20 ME, it is possible even complex and complex component geometries, such. As valves, heat exchangers or piping systems, completely encase with the insulation material and also fill undercuts. Due to the low viscosity, the insulating material can be pressed or pressed by hand onto the component to be insulated, either mechanically or even inexpensively. It can be like kneading
- the insulation material can also be pressed into the smallest openings and undercuts.
- such an insulating material has the advantages that it is not absorbent such.
- the insulation material then serves to reduce heat losses, as
- the insulating material can be used for electrical insulation, even in flame retardant execution.
- the insulation material applied to the component to be insulated, containing the at least partially unvarnished and plastically deformable rubber mixture, can be crosslinked or further crosslinked after application by the action of temperature and / or radiation.
- the insulation material is therefore still crosslinkable after application.
- the radiation may be IR radiation, microwaves or other high-energy radiation.
- the effect of temperature can be done for example by heating with hot air through a hair dryer. However, it is particularly easy and fast to network because the influence of temperature due to the insulating component takes place.
- the self-heat of the component to be insulated is networked.
- the insulating material Due to the subsequent cross-linking, the insulating material is fixed in its position for a long time in a stable manner, since the rubber mixture changes from the plastic to the elastic state during the cross-linking.
- An elastomeric insulating component is obtained which, even after disassembly, is at the same point or elsewhere at the same time
- the insulating material remains by its stickiness then stick to the surface to be insulated and also to itself and ensures easy fixation in the desired position.
- the rubber mixture has a pore structure.
- Pore structure may be through the use of chemical blowing agents or microspheres mixed into the rubber composition.
- blowing agents both inorganic and organic compounds can be used.
- the microspheres are hollow spheres (microspheres) with a diameter in ⁇ - ⁇ glass, phenolic resin, carbon or thermoplastic material. In part, they are in expandable form, being filled with a propellant and expanding upon heating, or in pre-expanded form; the expansion is already completed here.
- Such microspheres are z. B. sold under the name Expancel ® by the company Akzo Nobel.
- microspheres offer the advantage of forming a closed pore structure for isolation purposes is more suitable because of lower convection in the pores. The higher the amount of expanded microspheres, the better the higher the porosity
- the insulating material loses strength, which is disadvantageous when it is applied to the components to be insulated.
- the rubber composition of the insulating material contains from 2 to 15 phr of expanded microspheres of thermoplastic material. These microspheres are very light and cause the formation of a sufficient even in this dosage
- Pore structure without the ductility and the stickiness of the rubber mixture are adversely affected.
- the rubber mixture contains 10 to 100 phr microspheres of glass.
- an insulating material with higher stability and lower compressibility can be obtained since microspheres made of glass, in contrast to microspheres of thermoplastic material can not be compressed.
- the insulation material is based on a high temperature resistant rubber compound.
- rubbers can z.
- silicone rubber hydrogenated nitrile rubber (FINBR), fluororubber, acrylate rubber, ethylene-acrylate copolymers and terpolymers, ethylene-propylene-diene rubber, epichlorohydrin rubber and blends thereof can be used.
- the rubber mixture is preferably based on silicone rubber, since this rubber has a particularly high temperature resistance, plastic deformability and a certain stickiness. Preference is given to HTV types which can be both peroxidically crosslinkable and additioncrosslinkable.
- the silicone rubber can also be used as a premix of polymer, filler and oil, as is common in the market.
- the rubber mixture preferably contains at least 10 phr of silicone oil. This is well compatible with the silicone rubber and allows the setting of a kneading consistency with manual ductility.
- the rubber mixture of the insulation material contains a black pigment preparation. It has surprisingly been found that the stickiness of the material can be increased by such a black pigment preparation.
- the black pigments may be z. For example, be soot, iron oxide or mixtures thereof.
- As a black pigment preparations for example Elastosil ® color pastes, as Elastosil® color paste PT Black Standard Elastosil® color paste jet black RAL 9005, etc. or Elastosil® stabilizer H3, Wacker Chemie AG, Germany are used.
- Insulation material advantageously a flame retardant. Also for them
- Flame retardant has surprisingly been found to increase the tack of the material.
- the insulating material according to the invention can be prepared by methods known to those skilled in the art, wherein a rubber mixture with all the required additives is produced and the mixture is subsequently portioned.
- the insulation material can be offered in various forms, eg. B. in the form of spheres, strands, strips, webs or ribbons.
- a silicone rubber-based rubber composition 1 having the composition shown in Table 1 was prepared.
- One column of the table gives the possible quantity ranges for an inventive insulation material on the basis of
- Silicone rubber on The term phr used in this document (parts per hundred parts of rubber by weight) is the usual quantity in the rubber industry for Mix recipes. The dosage of the parts by weight of the individual substances is always based on 100 parts by weight of the total mass of all the rubbers present in the mixture. Furthermore, the Mooney viscosity of the mixture was measured according to DIN 53523 Part 3 at 23 ° C after 7 days. As a comparison, a silicone rubber mixture 2 is listed in Table 1, which does not have the required Mooney viscosity and therefore does not allow filling of undercuts by manual application of the material.
- the insulating material of the mixture 1 according to the invention is characterized by a uniform closed pore structure through the use of the pre-expanded microspheres. It shows a thermal conductivity of ⁇ 0.1 W / (m * K) and therefore has good insulation properties.
- the insulating material according to the invention was, in contrast to the
- Insulation material are fully provided, so that a maximum insulation could be achieved. Due to the stickiness, it adhered well to the individual components.
- the insulation material of mixture 1 offers excellent thermal and acoustic insulation even at temperatures above 130 ° C.
- the insulation mixture vulcanised by the heat of the medium flowing through could be removed and reattached again with the same insulating effect.
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- Organic Chemistry (AREA)
- Medicinal Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Architecture (AREA)
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Acoustics & Sound (AREA)
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- Compositions Of Macromolecular Compounds (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
Description
Beschreibung Isolationsmaterial Description insulation material
Die Erfindung betrifft ein flexibles Isolationsmaterial auf der Basis einer The invention relates to a flexible insulation material based on a
hochtemperaturbeständigen Kautschukmischung. Für die thermische und/oder akustische Isolation von Bauteilen, insbesondere von high temperature resistant rubber compound. For the thermal and / or acoustic isolation of components, in particular of
Bauteilen mit komplexen Geometrien, sind nur wenige Lösungen auf dem Markt erhältlich, die auch bei Temperaturen von mehr als 130 °C, insbesondere von mehr als 150 °C, einsetzbar sind. Üblicherweise werden zur Isolation von Bauteilen bei diesen hohen Temperaturen Mineralwollen eingesetzt, die zusätzlich mit einer Blech- oder Klebbandkaschierung versehen und damit stabilisiert werden. Derartige Components with complex geometries, only a few solutions are available on the market, which can also be used at temperatures of more than 130 ° C, in particular of more than 150 ° C. Usually mineral wools are used for the isolation of components at these high temperatures, which are additionally provided with a sheet or Klebbandkaschierung and thus stabilized. such
Isolationsmaterialien aus Mineralwolle mit Kaschierungen weisen folgende Nachteile auf: Die Montage bzw. Aufbringung auf das zu isolierende Bauteil und die Fixierung ist umständlich und daher teuer. Komplexe Bauteile (Formstücke) lassen sich auf Grund der geringen Flexibilität der Mineralwolle mit der notwendigen Kaschierung (Ummantelung) nur sehr schwer isolieren. Mineralwollen sind saugfähig, was bei Austritt von oder versehentlicher Benetzung mit Flüssigkeiten oder Bildung von Kondensat unter Insulation materials made of mineral wool with laminations have the following disadvantages: The assembly or application to the component to be insulated and the fixation is cumbersome and therefore expensive. Complex components (fittings) are very difficult to isolate due to the low flexibility of the mineral wool with the necessary lamination (sheathing). Mineral wools are absorbent, resulting in leakage of or accidental wetting with liquids or formation of condensate below
Umständen zum Verlust der Isolierwirkung und bei brennbaren Flüssigkeiten, wie z. B. Ölen, sogar zur Selbstentzündung führen kann. Bei der Aufbringung der Mineralwolle auf das zu isolierende Bauteil können außerdem Fasern und/oder Faserstaub frei werden, die bei längerer Exposition zu Krankheiten in den Atmungsorganen führen können. Cause the loss of insulation and flammable liquids such. As oils, even lead to auto-ignition. When applying the mineral wool on the component to be insulated also fibers and / or fiber dust can be released, which can lead to diseases in the respiratory organs during prolonged exposure.
Alternative Isolationsmaterialien auf der Basis von Polymeren, wie z. B. selbstblähende Dichtbänder oder vorgeformte Isolationsmaterialien auf der Basis von EPDM mit geschlossener Zellstruktur, sind in der Regel in ihrer Einsatztemperatur auf Bereiche von maximal 130 °C bzw. 150 bis 160 °C begrenzt. In der GB 2 249 753 A wird ein flexibles, bahnenförmiges Material zur Wärmeisolierung z. B. von Schläuchen bei extrem hohen Temperaturen beschrieben, welches eine Lage aus einem ggf. geschäumten Silikonkautschuk und eine Metallfolie aufweist. Weitere Alternative insulation materials based on polymers, such. As self-inflating sealing tapes or preformed insulation materials based on EPDM with closed cell structure are generally limited in their operating temperature to a maximum of 130 ° C or 150 to 160 ° C. In GB 2 249 753 A is a flexible, sheet-like material for thermal insulation z. B. of hoses at extremely high temperatures, which has a layer of a possibly foamed silicone rubber and a metal foil. Further
Gewebelagen können vorgesehen werden. Die Silikonkautschuklage wird vor der Fabric layers can be provided. The silicone rubber suit is before the
Aufbringung auf das zu isolierende Bauteil stets vernetzt. Dabei wird die Kautschuklage üblicherweise als Paste oder Lösung aufgebracht, getrocknet und anschließend vernetzt. Durch die vorherige Vernetzung weist das Material in der Regel keine plastische Application to the component to be insulated always networked. The rubber layer is usually applied as a paste or solution, dried and then crosslinked. Due to the previous networking, the material usually has no plastic
Verformbarkeit mehr auf, da die Vernetzung (Vulkanisation) der Übergang des Elastomers vom plastischen in den elastischen Zustand bewirkt. Das Material kann sich daher nicht optimal an sehr komplexe Bauteilgeometrien anpassen und die gewünschte Position oft nicht beibehalten. Deformability on, because the crosslinking (vulcanization) causes the transition of the elastomer from the plastic to the elastic state. The material therefore can not optimally adapt to very complex component geometries and often does not maintain the desired position.
Bahnenförmiges, flexibles Isolationsmaterial bietet auch bei plastischer Verformbarkeit oft den Nachteil, dass Hinterschnitte an komplexen Bauteilen, wie Armaturen oder Ventilen, beim Aufwickeln des bahnenförmigen Materials nicht mit dem Isolationsmaterial ausgefüllt werden. Web-shaped, flexible insulation material often offers the disadvantage, even in the case of plastic deformability, that undercuts on complex components, such as valves or valves, are not filled with the insulating material when the web material is wound up.
Der Erfindung liegt daher die Aufgabe zu Grunde, ein Isolationsmaterial für die The invention is therefore based on the object, an insulation material for the
Anwendung bei Temperaturen von mehr als 130 °C zur Verfügung zu stellen, welches sich einfach auf zu isolierende, komplexe Bauteile aufbringen lässt und auch Hinterschnitte ausfüllt. Application at temperatures of more than 130 ° C to provide, which can be easily applied to isolating complex components and also undercuts.
Gelöst wird diese Aufgabe erfindungsgemäß dadurch, dass die Kautschukmischung zumindest teilweise unvernetzt und plastisch verformbar ist und eine Mooney- Viskosität ML(l+4) bei 23 °C bestimmt gemäß DIN 53523 Teil 3 von 5 bis 20 ME aufweist. This object is achieved according to the invention in that the rubber mixture is at least partially uncrosslinked and plastically deformable and a Mooney viscosity ML (l + 4) determined at 23 ° C according to DIN 53523 Part 3 of 5 to 20 ME.
Unter„teilweise unvernetzt" ist dabei sowohl eine Kautschukmischung zu verstehen, die noch nicht verbrauchte Vernetzungschemikalien enthält, als auch eine By "partially uncrosslinked" is meant both a rubber mixture containing not yet spent crosslinking chemicals, as well as a
Kautschukmischung, die mit wenig oder gar keinen Vernetzungschemikalien vernetzt ist, aber noch zumindest vernetzbare Polymerbestandteile aufweist. Durch die plastische Verformbarkeit mit niedriger Mooney- Viskosität ML(l+4) bei 23 °C von 5 bis 20 ME gelingt es, auch komplizierte und komplexe Bauteilgeometrien, wie z. B. Ventile, Wärmetauscher oder Rohrleitungssysteme, vollständig mit dem Isolationsmaterial zu umhüllen und auch Hinterschnitte auszufüllen. Das Isolationsmaterial kann dabei wegen der niedrigen Viskosität einfach maschinell oder sogar kostengünstig per Hand auf das zu isolierende Bauteil gedrückt bzw. gepresst werden. Es lässt sich wie Knete bei Rubber mixture, which is crosslinked with little or no crosslinking chemicals, but still has at least crosslinkable polymer components. Due to the plastic deformability with low Mooney viscosity ML (l + 4) at 23 ° C from 5 to 20 ME, it is possible even complex and complex component geometries, such. As valves, heat exchangers or piping systems, completely encase with the insulation material and also fill undercuts. Due to the low viscosity, the insulating material can be pressed or pressed by hand onto the component to be insulated, either mechanically or even inexpensively. It can be like kneading
Raumtemperatur verarbeiten und bietet eine einfache und schnelle Möglichkeit komplexe Bauteile von Hand haltbar zu isolieren. Das Isolationsmaterial kann auch in kleinste Öffnungen und Hinterschnitte hineingedrückt werden. Room temperature processing and provides an easy and fast way to isolate complex components by hand durable. The insulation material can also be pressed into the smallest openings and undercuts.
Zusätzlich bietet ein derartiges Isolationsmaterial die Vorteile, dass es nicht saugfähig wie z. B. Mineralwolle ist und bei seiner Aufbringung keine gesundheitsgefährdenden In addition, such an insulating material has the advantages that it is not absorbent such. B. mineral wool and when it is applied no health hazard
Mineralfasern oder Faserstäube freigesetzt werden. Der Einsatzbereich bei hohen Temperaturen wird durch die Verwendung einer Mineral fibers or fiber dusts are released. The range of application at high temperatures is determined by the use of a
hochtemperaturbeständigen Kautschukmischung gewährleistet. high temperature resistant rubber compound guaranteed.
Das Isolationsmaterial dient dann zur Reduzierung von Wärmeverlusten, als The insulation material then serves to reduce heat losses, as
Verbrennungsschutz bei Berührung oder auch zur Schalldämmung. Auch zur elektrischen Isolierung, sogar in flammhemmender Ausführung, kann das Isolationsmaterial verwendet werden. Combustion protection when touched or for sound insulation. Also for electrical insulation, even in flame retardant execution, the insulating material can be used.
Das auf das zu isolierende Bauteil aufgebrachte Isolationsmaterial, enthaltend die zumindest teilweise unvemetzte und plastisch verformbare Kautschukmischung, kann nach der Aufbringung durch Einwirkung von Temperatur und/oder Strahlung vernetzt bzw. weiter vernetzt werden. Das Isolationsmaterial ist nach der Aufbringung also noch vernetzbar. Bei der Strahlung kann es sich um IR-Strahlung, Mikrowellen oder sonstige energiereiche Strahlung handeln. Die Einwirkung von Temperatur kann beispielsweise durch das Erwärmen mit heißer Luft durch einen Föhn erfolgen. Besonders einfach und schnell lässt sich aber dadurch vernetzen, dass die Temperatureinwirkung durch das zu isolierende Bauteil erfolgt. Durch die Eigenwärme des zu isolierenden Bauteils wird vernetzt. The insulation material applied to the component to be insulated, containing the at least partially unvarnished and plastically deformable rubber mixture, can be crosslinked or further crosslinked after application by the action of temperature and / or radiation. The insulation material is therefore still crosslinkable after application. The radiation may be IR radiation, microwaves or other high-energy radiation. The effect of temperature can be done for example by heating with hot air through a hair dryer. However, it is particularly easy and fast to network because the influence of temperature due to the insulating component takes place. The self-heat of the component to be insulated is networked.
Durch die nachträgliche Vernetzung wird das Isolationsmaterial langzeitstabil in seiner Position fixiert, da die Kautschukmischung bei der Vernetzung vom plastischen in den elastischen Zustand übergeht. Man erhält ein elastomeres Isolationsbauteil, welches auch nach der Demontage an gleicher Stelle oder an anderer Stelle bei einem gleich Due to the subsequent cross-linking, the insulating material is fixed in its position for a long time in a stable manner, since the rubber mixture changes from the plastic to the elastic state during the cross-linking. An elastomeric insulating component is obtained which, even after disassembly, is at the same point or elsewhere at the same time
ausgebildeten, zu isolierenden Bauteil wiederverwendet werden kann. Gemäß einer vorteilhaften Weiterbildung der Erfindung weist die Kautschukmischung bei der Aufbringung des Isolationsmaterials auf die zu isolierenden Bauteile eine so hohe Klebrigkeit auf, dass die Rückstellkräfte des Isolationsmaterials nicht zu einer Ablösung des Materials von der Bauteiloberfläche führen. Das Isolationsmaterial bleibt durch seine Klebrigkeit dann an der zu isolierenden Oberfläche und auch an sich selbst haften und gewährleistet eine einfache Fixierung in der gewünschten Position. trained, to be isolated component can be reused. According to an advantageous embodiment of the invention, the rubber mixture in the application of the insulating material on the components to be insulated on such a high tackiness that the restoring forces of the insulating material does not lead to a detachment of the material from the component surface. The insulating material remains by its stickiness then stick to the surface to be insulated and also to itself and ensures easy fixation in the desired position.
Um die thermischen oder auch akustischen Isolationseigenschaften zu verbessern, ist es von Vorteil, wenn die Kautschukmischung eine Porenstruktur aufweist. Diese In order to improve the thermal or acoustic insulation properties, it is advantageous if the rubber mixture has a pore structure. These
Porenstruktur kann durch den Einsatz von chemischen Treibmitteln oder Mikrokugeln erfolgen, die in die Kautschukmischung eingemischt sind. Als Treibmittel können sowohl anorganische sowie organische Verbindungen eingesetzt werden. Bei den Mikrokugeln handelt es sich um hohle Kugeln (Mikrosphären) mit einem Durchmesser im μιη-ΒεΓείΰΙι aus Glas, Phenolharz, Kohlenstoff oder thermoplastischem Kunststoffmaterial. Teilweise gibt es sie in expandierbarer Form, wobei sie mit einem Treibmittel gefüllt sind und sich beim Erwärmen ausdehnen, oder in vorexpandierter Form; die Ausdehnung ist hier schon abgeschlossen. Derartige Mikrokugeln werden z. B. unter dem Namen Expancel® von der Firma Akzo Nobel vertrieben. Pore structure may be through the use of chemical blowing agents or microspheres mixed into the rubber composition. As blowing agents, both inorganic and organic compounds can be used. The microspheres are hollow spheres (microspheres) with a diameter in μιη-ΒεΓείΰΙι glass, phenolic resin, carbon or thermoplastic material. In part, they are in expandable form, being filled with a propellant and expanding upon heating, or in pre-expanded form; the expansion is already completed here. Such microspheres are z. B. sold under the name Expancel ® by the company Akzo Nobel.
Zur Bildung einer Porenstruktur mit besonders guten Isolationseigenschaften werden der Kautschukmischung vorzugsweise 2 bis 100 phr Mikrokugeln zugesetzt. Mikrokugeln bieten den Vorteil der Bildung einer geschlossenen Porenstruktur, die für Isolationszwecke wegen geringerer Konvektion in den Poren besser geeignet ist. Je höher die Menge an expandierten Mikrokugeln, desto besser wird durch den höheren Porenanteil die To form a pore structure having particularly good insulating properties, it is preferred to add from 2 to 100 phr of microspheres to the rubber mixture. Microspheres offer the advantage of forming a closed pore structure for isolation purposes is more suitable because of lower convection in the pores. The higher the amount of expanded microspheres, the better the higher the porosity
Isolationswirkung. Bei zu großen Mengen an Mikrokugeln können sich jedoch Insulating effect. However, too large amounts of microspheres can
verarbeitungstechnische Probleme bei der Mischungsherstellung oder -Verarbeitung ergeben. Das Isolationsmaterial verliert an Festigkeit, was beim Aufbringen auf die zu isolierenden Bauteile von Nachteil ist. result in processing problems in compounding or processing. The insulating material loses strength, which is disadvantageous when it is applied to the components to be insulated.
Vorzugsweise enthält die Kautschukmischung des Isolationsmaterials 2 bis 15 phr expandierte Mikrokugeln aus thermoplastischem Material. Diese Mikrokugeln sind sehr leicht und bewirken schon in dieser Dosierung die Bildung einer ausreichenden Preferably, the rubber composition of the insulating material contains from 2 to 15 phr of expanded microspheres of thermoplastic material. These microspheres are very light and cause the formation of a sufficient even in this dosage
Porenstruktur, ohne dass die Verformbarkeit und die Klebrigkeit der Kautschukmischung negativ beeinflusst werden. Pore structure, without the ductility and the stickiness of the rubber mixture are adversely affected.
Gemäß einer alternativen Ausführungsform enthält die Kautschukmischung 10 bis 100 phr Mikrokugeln aus Glas. Mit dieser Variante lässt sich ein Isolationsmaterial mit höherer Standfestigkeit und geringerer Kompressibilität erhalten, da sich Mikrokugeln aus Glas im Gegensatz zu Mikrokugeln aus thermoplastischem Material nicht komprimieren lassen. According to an alternative embodiment, the rubber mixture contains 10 to 100 phr microspheres of glass. With this variant, an insulating material with higher stability and lower compressibility can be obtained since microspheres made of glass, in contrast to microspheres of thermoplastic material can not be compressed.
Das Isolationsmaterial basiert auf einer hochtemperaturbeständigen Kautschukmischung. Als Kautschuke können dabei z. B. Silikonkautschuk, hydrierter Nitrilkautschuk (FINBR), Fluorkautschuk, Acrylatkautschuk, Ethylen-Acrylat-Co- und Terpolymere, Ethylen- Propylen-Dienkautschuk, Epichlorhydrinkautschuk und Verschnitte aus diesen eingesetzt werden. Vorzugsweise basiert die Kautschukmischung auf Silikonkautschuk, da dieser Kautschuk eine besonders hohe Temperaturbeständigkeit, plastische Verformbarkeit und eine gewisse Klebrigkeit aufweist. Bevorzugt werden HTV-Typen, die sowohl peroxidisch vernetzbar als auch additionsvernetzbar sein können. Der Silikonkautschuk kann auch als Vormischung aus Polymer, Füllstoff und Öl, wie auf dem Markt üblich, eingesetzt werden. The insulation material is based on a high temperature resistant rubber compound. As rubbers can z. As silicone rubber, hydrogenated nitrile rubber (FINBR), fluororubber, acrylate rubber, ethylene-acrylate copolymers and terpolymers, ethylene-propylene-diene rubber, epichlorohydrin rubber and blends thereof can be used. The rubber mixture is preferably based on silicone rubber, since this rubber has a particularly high temperature resistance, plastic deformability and a certain stickiness. Preference is given to HTV types which can be both peroxidically crosslinkable and additioncrosslinkable. The silicone rubber can also be used as a premix of polymer, filler and oil, as is common in the market.
Um die Viskosität der auf Silikonkautschuk basierenden Kautschukmischung positiv zu beeinflussen, enthält die Kautschukmischung vorzugsweise zumindest 10 phr Silikonöl. Dies ist gut mit dem Silikonkautschuk verträglich und ermöglicht die Einstellung einer kneteartigen Konsistenz mit manueller Verformbarkeit. In order to positively influence the viscosity of the silicone rubber-based rubber composition, the rubber mixture preferably contains at least 10 phr of silicone oil. This is well compatible with the silicone rubber and allows the setting of a kneading consistency with manual ductility.
Gemäß einer vorteilhaften Weiterbildung der Erfindung enthält die Kautschukmischung des Isolationsmaterials eine Schwarzpigmentpräparation. Es hat sich überraschenderweise herausgestellt, dass durch eine solche Schwarzpigmentpräparation die Klebrigkeit des Materials erhöht werden kann. Bei den Schwarzpigmenten kann es sich z. B. um Ruß, Eisenoxid oder Gemischen daraus handeln. Als Schwarzpigmentpräparationen können beispielsweise Elastosil® Farbpasten, wie Elastosil® Farbpaste PT Schwarz Standard, Elastosil® Farbpaste Tiefschwarz RAL 9005, etc. oder auch Elastosil® Stabilisator H3, der Firma Wacker Chemie AG, Deutschland eingesetzt werden. According to an advantageous development of the invention, the rubber mixture of the insulation material contains a black pigment preparation. It has surprisingly been found that the stickiness of the material can be increased by such a black pigment preparation. The black pigments may be z. For example, be soot, iron oxide or mixtures thereof. As a black pigment preparations for example Elastosil ® color pastes, as Elastosil® color paste PT Black Standard Elastosil® color paste jet black RAL 9005, etc. or Elastosil® stabilizer H3, Wacker Chemie AG, Germany are used.
Zur Verbesserung des Flammschutzes enthält die Kautschukmischung des To improve the flame retardant contains the rubber mixture of
Isolationsmaterials vorteilhafterweise ein Flammschutzmittel. Auch für die Insulation material advantageously a flame retardant. Also for them
Flammschutzmittel wurde überraschenderweise gefunden, dass sie die Klebrigkeit des Materials erhöhen. Flame retardant has surprisingly been found to increase the tack of the material.
Das erfindungsgemäße Isolationsmaterial lässt sich nach dem Fachmann bekannten Verfahren herstellen, wobei eine Kautschukmischung mit allen benötigten Zuschlagstoffen erzeugt wird und die Mischung im Anschluss portioniert wird. Das Isolationsmaterial kann in unterschiedlichsten Formen angeboten werden, z. B. in Form von Kugeln, Strängen, Streifen, Bahnen oder Bändern. The insulating material according to the invention can be prepared by methods known to those skilled in the art, wherein a rubber mixture with all the required additives is produced and the mixture is subsequently portioned. The insulation material can be offered in various forms, eg. B. in the form of spheres, strands, strips, webs or ribbons.
Anhand eines Ausführungsbeispiels soll die Erfindung näher erläutert werden, ohne dabei auf dieses beschränkt zu sein. Reference to an embodiment, the invention will be explained in more detail, without being limited to this.
Es wurde eine auf Silikonkautschuk basierende Kautschukmischung 1 mit der in Tabelle 1 dargestellten Zusammensetzung hergestellt. Eine Spalte der Tabelle gibt die möglichen Mengenbereiche für ein erfindungsgemäßes Isolationsmaterial auf der Basis von A silicone rubber-based rubber composition 1 having the composition shown in Table 1 was prepared. One column of the table gives the possible quantity ranges for an inventive insulation material on the basis of
Silikonkautschuk an. Die in dieser Schrift verwendete Angabe phr (parts per hundred parts of rubber by weight) ist dabei die in der Kautschukindustrie übliche Mengenangabe für Mischungsrezepturen. Die Dosierung der Gewichtsteile der einzelnen Substanzen wird dabei stets auf 100 Gewichtsteile der gesamten Masse aller in der Mischung vorhandenen Kautschuke bezogen. Ferner wurde die Mooney- Viskosität der Mischung gemäß DIN 53523 Teil 3 bei 23 °C nach 7 Tagen gemessen. Als Vergleich ist in der Tabelle 1 eine Silikonkautschukmischung 2 aufgeführt, die nicht die erforderliche Mooney- Viskosität aufweist und daher eine Ausfüllung von Hinterschnitten durch manuelle Aufbringung des Materials nicht ermöglicht. Silicone rubber on. The term phr used in this document (parts per hundred parts of rubber by weight) is the usual quantity in the rubber industry for Mix recipes. The dosage of the parts by weight of the individual substances is always based on 100 parts by weight of the total mass of all the rubbers present in the mixture. Furthermore, the Mooney viscosity of the mixture was measured according to DIN 53523 Part 3 at 23 ° C after 7 days. As a comparison, a silicone rubber mixture 2 is listed in Table 1, which does not have the required Mooney viscosity and therefore does not allow filling of undercuts by manual application of the material.
Tabelle 1 Table 1
b Elastosil® Aux Batch SB2, Wacker Chemie AG, Deutschland cExpance 920 DE 40 d30, Akzo Nobel N. V., Niederlande b Elastosil ® Aux batch SB2, Wacker Chemie AG, Germany c Expance 920 EN 40 d30, Akzo Nobel NV, The Netherlands
dExpancel® 920 DU 80, Akzo Nobel N. V., Niederlande dExpancel ® 920 DU 80, Akzo Nobel NV, Netherlands
eElastosil® Farbpaste PT Schwarz Standard, Wacker Chemie AG, Deutschland eElastosil ® Color Paste PT Schwarz Standard, Wacker Chemie AG, Germany
Das erfindungsgemäße Isolationsmaterial der Mischung 1 zeichnet sich durch eine gleichmäßige geschlossene Porenstruktur durch die Verwendung der vorexpandierten Mikrokugeln aus. Es zeigt eine Wärmeleitfähigkeit von < 0,1 W/(m*K) und weist daher gute Isolationseigenschaften auf. The insulating material of the mixture 1 according to the invention is characterized by a uniform closed pore structure through the use of the pre-expanded microspheres. It shows a thermal conductivity of <0.1 W / (m * K) and therefore has good insulation properties.
Das erfindungsgemäße Isolationsmaterial ließ sich, im Gegensatz zu der The insulating material according to the invention was, in contrast to the
Vergleichsmischung 2, wie Knete bei Raumtemperatur verarbeiten und komplexe Bauteile mit Hinterschnitten, kleinen Öffnungen oder Spalten konnten von Hand mit dem Comparison mixture 2, how to handle plasticine at room temperature and complex components with undercuts, small openings or gaps could be made by hand with the
Isolationsmaterial vollumfänglich versehen werden, so dass eine maximale Isolation erzielt werden konnte. Auf Grund der Klebrigkeit haftete es gut an den einzelnen Bauteilen. Das Isolationsmaterial der Mischung 1 bietet eine hervorragende thermische und akustische Isolation auch bei Temperaturen von mehr als 130 °C. Es wurden diverse Rohrleitungen, Flansche und Ventile, die von Medien bis 200 °C durchströmt wurden, manuell mit der Mischung 1 isoliert. Die durch die Wärme des durchströmenden Mediums vulkanisierte Isolationsmischung konnte abgenommen und erneut mit gleicher Isolationswirkung wieder angebracht werden. Insulation material are fully provided, so that a maximum insulation could be achieved. Due to the stickiness, it adhered well to the individual components. The insulation material of mixture 1 offers excellent thermal and acoustic insulation even at temperatures above 130 ° C. Various pipes, flanges and valves, which were flowed through by media up to 200 ° C, manually isolated with the mixture 1. The insulation mixture vulcanised by the heat of the medium flowing through could be removed and reattached again with the same insulating effect.
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2014101716/05A RU2573027C2 (en) | 2011-06-24 | 2012-05-23 | Insulation material |
| CN201280031210.6A CN103827980A (en) | 2011-06-24 | 2012-05-23 | Insulating material |
| KR1020137028278A KR101899414B1 (en) | 2011-06-24 | 2012-05-23 | Insulating material |
| US14/098,086 US9366024B2 (en) | 2011-06-24 | 2013-12-05 | Insulating material |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP11171302.0 | 2011-06-24 | ||
| EP11171302.0A EP2538416B1 (en) | 2011-06-24 | 2011-06-24 | Insulation material |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US14/098,086 Continuation US9366024B2 (en) | 2011-06-24 | 2013-12-05 | Insulating material |
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| WO2012175268A1 true WO2012175268A1 (en) | 2012-12-27 |
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| PCT/EP2012/059548 Ceased WO2012175268A1 (en) | 2011-06-24 | 2012-05-23 | Insulating material |
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| Country | Link |
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| US (1) | US9366024B2 (en) |
| EP (1) | EP2538416B1 (en) |
| KR (1) | KR101899414B1 (en) |
| CN (1) | CN103827980A (en) |
| RU (1) | RU2573027C2 (en) |
| WO (1) | WO2012175268A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2842992A1 (en) | 2013-08-27 | 2015-03-04 | ContiTech Elastomer-Beschichtungen GmbH | Insulation material |
| DE102014212128A1 (en) | 2014-06-24 | 2015-12-24 | Contitech Elastomer-Beschichtungen Gmbh | Insulating material and method for producing an insulating material |
| WO2018077355A1 (en) | 2016-10-26 | 2018-05-03 | Continental Automotive Gmbh | Sensor with a triboelectric and capacitive effect |
| DE102017206838A1 (en) | 2017-04-24 | 2018-10-25 | Contitech Elastomer-Beschichtungen Gmbh | Flexible insulation material |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106125216B (en) * | 2016-07-01 | 2023-06-23 | 江苏亨通光电股份有限公司 | High-grade flame-retardant fire-resistant optical cable |
| DE102017206654A1 (en) | 2017-04-20 | 2018-10-25 | Contitech Elastomer-Beschichtungen Gmbh | Flexible insulation material |
| DE102019125962A1 (en) | 2019-09-26 | 2021-04-01 | Maschinenfabrik Reinhausen Gmbh | Dry, syntactic foam as an electrically insulating material |
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- 2012-05-23 WO PCT/EP2012/059548 patent/WO2012175268A1/en not_active Ceased
- 2012-05-23 KR KR1020137028278A patent/KR101899414B1/en not_active Expired - Fee Related
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| GB2249753A (en) | 1990-11-13 | 1992-05-20 | T & N Technology Ltd | A flexible sheet material |
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| DE102014212128A1 (en) | 2014-06-24 | 2015-12-24 | Contitech Elastomer-Beschichtungen Gmbh | Insulating material and method for producing an insulating material |
| WO2018077355A1 (en) | 2016-10-26 | 2018-05-03 | Continental Automotive Gmbh | Sensor with a triboelectric and capacitive effect |
| DE102017206838A1 (en) | 2017-04-24 | 2018-10-25 | Contitech Elastomer-Beschichtungen Gmbh | Flexible insulation material |
| WO2018197062A1 (en) | 2017-04-24 | 2018-11-01 | Contitech Elastomer-Beschichtungen Gmbh | Flexible insulation material |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20140038395A (en) | 2014-03-28 |
| CN103827980A (en) | 2014-05-28 |
| US20140091248A1 (en) | 2014-04-03 |
| KR101899414B1 (en) | 2018-09-18 |
| RU2014101716A (en) | 2015-07-27 |
| EP2538416A1 (en) | 2012-12-26 |
| RU2573027C2 (en) | 2016-01-20 |
| US9366024B2 (en) | 2016-06-14 |
| EP2538416B1 (en) | 2017-08-30 |
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